The Photocatalytic Performance of Core-Shell Heterostructure ZnO/ZnS Composites
In order to enhance the effect of ZnO photocatalytic organic wastewater,ZnO/ZnS composites with core-shell heterostructure were prepared by hydrothermal method combined with ion exchange technique,and their catalytic degradation of methyl orange organic wastewater was investigated.By XRD,SEM,TEM characterization,it was confirmed that ZnO/ZnS composites with rod-core-shell heterostructure were prepared successfully,and the formation mechanism was preliminarily discussed.The experimental results show that with the increase of ion exchange time,ZnS gradually formed core-shell heterostructure on the rod-shaped ZnO surface.The structure not only broadens the spectral absorption range of ZnO,but also improves its catalytic performance.When the reaction time reaches 180 min,the methyl orange degradation rate of ZnO/ZnS composites reaches 80.05％,which is 30％higher than that of pure ZnO catalyst.ZnO/ZnS composites with core-shell heterostructure provide a new method for further improving the application effect of ZnO photocatalysis technology in organic wastewater treatment.
NETL
NSTL
万方数据
